Rail joint



March 2 1926. 1,575,394

J. o. TARDIF RAIL JOINT Registered Mar. Z, 1926.

UNITED sTATEs JOSEPH OMER TARDIF,

PATENT joFFicE.

or QUEBEC, QUEBEC, CANADA, Assienon To GEORGE FRED- i ERICH KNIGHT, 'or etienne,v CANADA.

RAIL JOINT.

Application ineanarch 14, i924. semi N6. 699,236.

To all whom it 'may concern.'

Be it known that I, Josnrii 0Min; TAnDiir, a subject ofthe King of Great Brita-in, and residing at the city of Quebec, in the Province of Quebec, in the Dominion of Canada, have invented a, new and useful Rail Joint, of which the following is the specification.

' The invention relates to a rail oint as described in the present specification and illustrated in the accompanying drawings that form part of the same.

The invention consists essentially of the 4novel features of construction pointed out broadly and specifically in the claim for novelty following a descriptionin detail of an acceptable form of the invention.

The objects of the invention are to eliminate the vibrations due to the transverse splits in the lines of railway incident to the end to end meeting of the rail lengths, to econoinize in the matter of rail renewals; to minimize the cost of vmaintenance of rolling stock; to afford comfort to passengers in railway trains; and generally to;I provide an efficient and durable rail joint.

1n the drawings, Figure 1 is a perspective view of the joint showing two meeting rails broken away.

Figure 2 is a perspective detail of a `joint member.

Figure 3 is a cross sectional view of the joint members showing a rail in dotted lines.

Figure et is a side elevation showing one joint plate removed.

Like numerals of reference indicate corresponding parts in lthe various figures.

Referring to the drawings, the rail heads 1 and 2 -are formed with the longitudinalv slots 3 and 4f respectively cut into said heads thereof at the inner edges.

The joint plate 5 is a formed with a head 6 fitting closely into the slots 3 and l and bridging the split 7 in the line of rail made at the meeting of the Yrail ends and complet ing the rail heads to take the wheel tires, so in passing over the split 7, there will be no break in the line of railway and consequently no sinking of the rail ends, with the consequent absence of vibration.

The head 6 of the joint plate 5 is anupward extension from the vertical section S of said joint plate for the greater part of the length of said section the latter projecting slightly beyond the head 6 at theends 9 fand rising upwardly into said head G intermediate of the length thereof.

The verticalsection 8 at its lower end extends into the outwardly projecting "flange 19 extending over one side of the rail bases 11 and curved at12 around the outer edge thereof having the spike slots 13 towards either end.

The inner edge of the flange 10where it joins the vertical' section 8,V extends into the lug 14; abutting the rail webs 15. 1 The flange 1() and section 8y are reinforcedby the integral buttresses 16 and 17 at each end beyond the head 6, and in the centre by the wide hollow buttress 19 formed by an outward bulge of the metal of both flange yand section and extending from the outer edge of said flange to the upper edge of said section immediately under the head 6 and forming an additional support for the latter from its inner edge to its outer edge. j

The square bolt holes 19 are arranged in pairs between the central and end buttresses. The joint or fish plate 20 on the opposite side of the rails is formed with the verticalv section 21 extending intothe flange 22 projecting over the other side of the rail base j I 11 and curved at 23 over the outer edge thereof having the spike slots 24; and 25 towards either end. The lug 26 is in line with the flange 22, abuts the-rail webs 15 and the vertical section 21 is offset outwardly and upwardly at its upper end 27 and terminates in theinclined surface 28 `flush with the rail heads 1 and 2 and bridging the split 7 at the outer edges of the rails.

The 'end buttresses 29 and 30 are integral with the section 21 and flange 22 and eX- tend upwardly behind the offsety end 27 and the central hollow buttress 31 is formed by an outward bulge of the metal of the section 21 and flange 22 and extend from the 'outer edge of the flange 22 -to the extreme Q i i a 1,575,394

lt will now be seen that a secure fastening is provided for the rail ends in a line of railway, which can readily be secured tothe foundation or bed, Whether Wood ties or otherwise as only slight modification is necessary to accommodate it to any roady bed. The bridging of the split represented by the meeting rail ends at the inside and the outside leaves the actual rails free to expand and contract according to changes of temperature and to slide freely Within their secure fastening and at the same time furnish the load.

a surface for the Wheels to pass over the split Without in any Way breaking the line of rail and causing the same to sink at eachl rail end customarily due to the passing of The headed joint plate in itself is a good provision for bearing the load at the rail endsT` but reinforced by the bridg ing against the inner side of the rail heads, it becomes tantamount to a continuation of i the line, rthus avoiding the breaks and `consequentj ars and jolts and damage to rolling stock.

Further it may be pointed out that the A central buttresses being hollow alloW- the ends during expansion and contraction due to climatic conditions, as it will be not-iced that the joint plates are secured to the tie beyond the rail bases and the bolts operate in elongated holes, therefore the friction at lthe ends of the bases is removed', as they are not in contact With the joint and it is at the ends that the friction is much greater than under the bolt portions.

Vhat I claim is:

A joint comprising a joint plate formed at the upper edge as a splice bar fitting into corresponding slots in the meeting rails and crossing from rail to rail, said plate having a liollox'v buttress in the centre thereof en-' closing the Webs and bases of the railsr at the split, andv a joint plate on the opposite side having a corresponding but'tress thereby leaving a clear space about the rail ends below the tread, said joint plates havingflanges extending beyond the rail bases and formed with spike slots and bolt holes for the fastening bolts.

Signed at Quebec this 1st day of February JOSEPH; OMER munir. 

